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Why does one need to study about soil and what is its importance?
You would be aware that, from the dawn of agriculture, cultivators were attracted to fertile soils of river valleys. Early Greek and Roman writers have described farming systems that involved leguminous plants, use of ashes and sulphur as soil su pplements. German chemist Justus von Liebig (1840) found that crop yields were increased by adding minerals to soils. He proposed that the mineral elements in the soil added as manures and fertilizers are essential for plant growth. According to him certain factors are essential for plant growth and if any one of these factors is limiting (controlling) plant production would be reduced. Soils are studied today to ascertain which of these factors is below desired level and how its limitation to plant growt h can be removed.
Q. What are the main interspecific ecological interactions? The major harmonious interspecific ecological interactions are: protocooperation, commensalism and mutualism. The ma
Normal or General Diet This diet is planned to be consistent with the Recommended Dietary Allowances (RDAs) of nutrients and is based on the food groups. It is usuall
What are twins? Genetically what are the two types of twins that can be generated? Twins are simultaneously generated (within the mother's uterus) offspring. Twins classify acc
Define the Quantitative Analysis in Nutritional Biochemistry? Quantitative analysis involves the measurement of the amount of a substance present. This measurement can be done
Adaptive radiation OR convergence Adaptive radiation Explanation of the adaptive radiation process linked to the introduction of a single species and the wide range
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INTRODUCTIO N - Karl Von Baer - Coined the term cleavage. Swammerdom - First time seen cleavage. Prevost and Dumas - Reported cleavage of frog's egg. Spllanzani - Detail
Megasporogenesis One of the nucellar cells situated subjacent to the epidermis differentiates into the primary archesporial cell. This cell is larger than the adjacent ce
Q. Define Eye Balling? Ans. Two-dimensional echocardiography provides a good visual perception of cardiac functions. With experience, the echocardiologist learns to percei
Central Nervous System Hypertension is one of the leading causes of cerebrovascular disease. It has been associated with accelerated age related cognitive decline. The most d
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